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system is not a substitute for a well-rested and
attentive driver.
The functionality of ATTENTION ASSIST is
restricted, and warnings may be delayed or not
occur at all:
if the length of the journey is less than approx-
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imately 30 minutes
if the road condition is poor, e.g. if the surface
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is uneven or if there are potholes
if there is a strong side wind
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if you have adopted a sporty driving style with
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high cornering speeds or high rates of accel-
eration
if you are predominantly driving at a speed
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below 60 km/h or above 200 km/h
if you are driving with the DISTRONIC PLUS
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active steer assist activated
if the time has been set incorrectly
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in active driving situations, such as when you
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change lanes or change your speed
The evaluation of your attention level is deleted
and restarted when continuing the journey, if:
you switch off the engine
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you take off your seat belt and open the driv-
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er's door, e.g. for a change of drivers or to
take a break
Displaying the attention level
You can have current status information dis-
played in the assistance menu (
the on-board computer.
Select the assistance graphic display for
X
ATTENTION ASSIST using the on-board com-
puter (
page 290).
Y
The following information is displayed:
the length of the journey since the last break
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the attention level determined by ATTENTION
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ASSIST, displayed in a bar display in five levels
from high to low
if ATTENTION ASSIST is unable to calculate
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the attention level and cannot output a warn-
ing, the
appears. The bar display then changes the
display, e.g. if you are driving at a speed below
60 km/h or above 200 km/h.
Activating ATTENTION ASSIST
Activate ATTENTION ASSIST using the on-
X
board computer (
The system determines the attention level of
the driver depending on the setting selected:
Standard selected: the sensitivity with which
the system determines the attention level is set
to normal.
Sensitive selected: the sensitivity is set higher.
The attention level detected by ATTENTION
ASSIST is adapted accordingly and the driver is
warned earlier.
When ATTENTION ASSIST is deactivated, the
À symbol and OFF appear in the multifunc-
tion display in the assistance graphics display
when the engine is running.
When ATTENTION ASSIST has been deactivated,
it is automatically reactivated after the engine
has been switched off. The sensitivity selected
corresponds to the last selection activated
(standard/sensitive).
Warning in the multifunction display
If fatigue or increasing lapses in concentration
are detected, a warning appears in the multi-
function display:
break!
break!
In addition to the message shown in the multi-
function display, you will then hear a warning
tone.
page 289) of
Y
If necessary, take a break.
X
Confirm the message by pressing the a
X
button on the steering wheel.
On long journeys, take regular breaks in good
time to allow yourself to rest. If you do not take
a break, you will be warned again after
15 minutes at the earliest. This will only happen
if ATTENTION ASSIST still detects typical indi-
Driving systems
System suspended
System suspended
message
page 291).
Y
Attention Assist:
Attention
Assist: Take
241
Take a a
Z
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